i dont know how the porygon moves convertion and convertion2 work I checked it on this forum and bulbapedia but I dont get it!?
Conversion changes your Pokemon's type to one of the types of your Pokemon's moves so it if knew ice beam, conversion, discharge, and dark pulse, then your type would change to either ice, electric, or dark.
Conversion2 changes your Pokemon's type to a type that is resistant or immune to the last move that your opponent used on you. An example would be if the foe's Pokémon used Thunderbolt in which is an Electric-type move that was the last attack to hit the user's Pokémon, then that Pokémon will change to a Ground-type Pokémon.
Conversion : Randomly Changes the user's type to one of its moves
Conversion 2 : Changes the user to the type of the move that foe last used